From: Eric Anholt <eric@anholt.net>
To: robert.foss@collabora.com, daniel.vetter@ffwll.ch,
airlied@linux.ie, aniel.vetter@ffwll.ch, fengguang.wu@intel.com,
maarten.lankhorst@linux.intel.com, julia.lawall@lip6.fr,
alexander.deucher@amd.com, daniels@collabora.com,
derekf@osg.samsung.com, varadgautam@gmail.com
Cc: dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org,
Robert Foss <robert.foss@collabora.com>
Subject: Re: [PATCH v2] drm/vc4: Return -EBUSY if there's already a pending flip event.
Date: Tue, 03 May 2016 12:22:00 -0700 [thread overview]
Message-ID: <8737pzlzfr.fsf@eliezer.anholt.net> (raw)
In-Reply-To: <1462297700-17491-1-git-send-email-robert.foss@collabora.com>
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robert.foss@collabora.com writes:
> From: Robert Foss <robert.foss@collabora.com>
>
> As per the documentation in drm_crtc.h, atomic_commit should return
> -EBUSY if an asycnhronous update is requested and there is an earlier
> update pending.
>
> Note: docs cited here are drm_crtc.h, and the whole quote is:
>
> * - -EBUSY, if an asynchronous updated is requested and there is
> * an earlier updated pending. Drivers are allowed to support a queue
> * of outstanding updates, but currently no driver supports that.
> * Note that drivers must wait for preceding updates to complete if a
> * synchronous update is requested, they are not allowed to fail the
> * commit in that case.
>
> Signed-off-by: Robert Foss <robert.foss@collabora.com>
This looks good to me. Let's give it a few days on the list for any
other KMS folks to catch anything.
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next prev parent reply other threads:[~2016-05-03 19:22 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-05-03 17:48 robert.foss
2016-05-03 19:22 ` Eric Anholt [this message]
2016-05-10 15:35 ` Robert Foss
2016-05-10 17:06 ` Eric Anholt
2016-05-10 17:19 ` Robert Foss
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